let navcode = document.querySelector('.nav');
navcode.innerHTML = `
        <ul class="stk">
            <a href="./index.html"><li class="navper">首页</li></a>
            <li class="navmain"><span>学生信息管理及预警</span></li>
            <a href="./student_info_management.html"><li class="navper">学生信息管理</li></a>
            <a href="./import_student_basic_info.html"><li class="navper">导入学生基本信息</li></a>
            <a href="./import_census_records.html"><li class="navper">导入普查记录</li></a>
            <a href="./add_emergency_files.html"><li class="navper">新增危机档案</li></a>
            <a href="./add_medical_case_files.html"><li class="navper">新增病例档案</li></a>
            <li class="navmain"><span>咨询管理</span></li>
            <a href="./consultation_record_management.html"><li class="navper">咨询记录管理</li></a>
            <a href="./add_consultation_record.html"><li class="navper">新增咨询记录</li></a>
            <a href="./import_consultation_records.html"><li class="navper">导入咨询记录</li></a>
            <li class="navmain"><span>访谈管理</span></li>
            <a href="./interview_record_management.html"><li class="navper">访谈记录管理</li></a>
            <a href="./add_interview_record.html"><li class="navper">新增访谈记录</li></a>
            <li class="navmain"><span>用户管理</span></li>
            <a href="./user_management.html"><li class="navper">用户管理</li></a>
            <a href="./role_management.html"><li class="navper">用户角色管理</li></a>
        </ul>
    `;